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Finding the Fourth Proportional to 611,660.57, 917,490.90 and 190,972.49

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Solution

The fourth proportional to 611,660.57, 917,490.90 and 190,972.49 is: 286,458.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,660.57 : 917,490.90 = 190,972.49 : x
  2. Step 2: Convert to fraction form
    611,660.57/917,490.90 = 190,972.49/x
  3. Step 3: Cross multiply
    611,660.57x = 917,490.90 × 190,972.49
  4. Step 4: Simplify right side
    611,660.57x = 175,215,521,725.34
  5. Step 5: Solve for x
    x = 175,215,521,725.34/611,660.57
  6. Step 6: Final answer
    x = 286,458.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.